OF ARTS AND SCIENCES. 411 



inches long (with the elongated stipe) by 5 lines broad, Guadala- 

 jara, on hillsides among underbrush ; August. (279.) — Closely allied 

 to C. Houstoni and C. grandijlora, differing from both in the white 

 pubescence, more numerous pinnjE and leaflets, and larger flowers, 

 and from C. grandijlora also in its shorter peduncles and acute sub- 

 falcate leaflets. 



PiTHECOLOBiuM DTJLCE, Benth. Barranca. (102.) — In fruit 

 only, but apparently differing from the ordinary form only in the 

 mostly crimson (instead of white) pulpy aril, which is an article of 

 food and trade under the name of "guamuchel." 



Prunus salicifolia, HBK. {P.Capidi, Cav. P.Capollin, DC.) 

 A tree, 25 to 30 feet high and a foot in diameter, fruiting abundantly, 

 the fruit nearly as large as the Black Tartarian cherry, and ripe at 

 Guadalajara early in May : leaves lanceolate or oblong-lanceolate, 

 acuminate or often long-acuminate, frequently more or less attenuate 

 at base, the blade often 3 or 4 inches long. Rio Blanco ; June. (22.) 

 — There appears to be no distinction between the Mexican and 

 Peruvian species, for which the name here adopted is the oldest, 

 unless an earlier citation than Sprengel can be found for P. Capuli, 

 Cav. The form (var. acutifolia) from more northern Mexico and 

 extending into Arizona, New Mexico, and western Texas, having 

 smaller leaves (rarely 3 inches long), which are acute or rarely 

 subacuminate, may be distinct. 



Crataegus pubescens, Steud, Twenty feet high ; fruit yellow 

 with black dots, and often a red blush on one side. Guadalajara; 

 September. (465.) — "Tejocote"; a jelly is made from the fruit, 

 resembling that from the quince. 



Sedum Guadalajarana. Perennial, with numerous slender some- 

 what woody branching stems from a branching tuberiferous rootstock, 

 a foot high or less, puberulent: leaves numerous, very narrowly linear, 

 clasping, glabrous, glaucous, 3 lines long or less : flowers in simple or 

 rarely forked short terminal racemes, shortly pedicellate : sepals linear- 

 subulate, acuminate; petals white, linear, acuminate, 1^ lines long; 

 scales rounded, thickened and glandular above : stamens and pistils 

 equalling the sepals. Rio Blanco, on mountain sides upon shaded 

 rocks; July. (170.) — Near S. Boiirgcei, Hemsl. 



Sedcm Chapalense. Stems stout, about a span high, panicu- 

 lately branched above, glabrous : leaves pubescent, those on sterile 

 shoots rosulate, obovate or ovate, acutish, 6 lines long: flowers ses- 

 sile upon the simple or once-forked circinate branches : calyx-lobes 

 fclightly pubescent, oblong-ovate, acutish ; petals white, oblong-ovate, 



